Decentralised wastewater treatment system at Kachpura slum as a part of Crosscutting Agra Program (CAP) for low income communities. The system was installed with financial assistance from Water Trust UK and London Metropolitan University and technical support by Vijay Vigyan foundation. The aim of the programme was to improve the sanitation conditions in the slum areas. The system treats approximately 50 KLD of the total wastewater which it receives from 5 clusters of slums through a common drain. The remaining untreated wastewater flows through parallel drain into the major drain that connects to the River Yamuna.

The system comprises of screen chamber which prevents the solid waste entering into the system. The wastewater then enters into three chambered septic tank. After primary treatment, it goes to nine chambered baffled anaerobic reactor which is filled with gravels. After secondary treatment the wastewater goes to planted filter bed for root zone treatment. The bed is filled with three different types of filter media (white river pebbles, red stones and gravels) and planted with Canna indica. The treated wastewater is reused for horticulture and irrigation purpose by the local community of Kachpura.